camshaft gear size

[Walt Dupont--Me.]

Originally Posted by 34billct

The green book lists the gears in std. .006 and .012" over size. I have looked through all the books and guides I have and cannot find a spec. to guide me. I am going to have a 34 block line bored for insert cam bearings as the block from the factory( as all 32-34 blocks) did not have insert's. SOO I thought I should know what the space must be. thanks four your help.

If the block is lined bore for insert bearings it should be setup in the machine so the center line of the crank is still in stock location. I line bored 100's of engine year ago, some had spun main bearings in the block. In that case I had to lower the crank in to the block a few .000 If they were to bad I had to sleeve the bore. A lot of industrial engines had undersize cam gears if you had to drop the crank to far. Walt